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Vampire Number
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Geliefert zwischen Mi., 26.11.2025 und Do., 27.11.2025
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High Quality Content by WIKIPEDIA articles! In mathematics, a vampire number (or true vampire number) is a composite natural number v, with an even number of digits n in a given base (usually decimal), that can be factored into two integers x and y each with n/2 digits and not both with trailing zeroes, where v contains precisely all the digits from x and from y, in any order, counting multiplicity. x and y are called the fangs.For example: 1260 is a vampire number, with 21 and 60 as fangs, since 21 × 60 = 1260. However, 126000 (which can be expressed as 210 × 600) is not, as both 210 and 600 have trailing zeroes. Similarly, 1023 (which can be expressed as 31 × 33) is not, because although 1023 contains all the digits of 31 and 33, the list of digits of the factors does not coincide with the list of digits of the original number.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786131118883
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- EAN 9786131118883
- Format Fachbuch
- Titel Vampire Number
- Herausgeber Betascript Publishing
- Anzahl Seiten 100
- Genre Mathematik
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